Any member is entitled to his or her own opinion and any member should be able to express that opinion without fear of being personally attacked and insulted for it.

This should be the case. People react how they want to react. With no tone, or body language behind the words people will read things as they see them. Comments like, "fuck you" are just an example of the levels of emotional intelligence in some people.

As moderator, I've dealt with a lot of pms about people feeling precious about their work and they have fired personal insults. People's beliefs and opinions are important to them but it's how they articulate them that is the issue.

I just close my laptop down and log off. The mind is a powerful thing. Joining in and reacting to their show only makes them worse. Ignore them and they soon lose interest. If they don't, block them.